Photograph shows man standing alone in bateau in the middle of the Blackfoot River, using a pole to dislodge debris downriver of his boat. A pile of lumber is visible on the opposite bank of the river. Photo caption reads: Arne Karkanen trying to...

Two men are visible standing on wooden structure in the middle of the Blackfoot River. Large pile of floating debris can be seen in left of image. A pile of lumber is visible on bank of river in the background. Photo caption reads: Rivermen trying...

Photograph shows four men in a bateau in the middle of the Blackfoot River. The front three are standing, fourth man sits holding pole attached to plank extending from riverbank. Front man in boat clutches cable mounted to pulley attached to a...

Photograph of two men in the middle of a river attempting to dislodge a log jam. Logs are visible piled on riverbank behind the men. Photo caption reads: High water at the Bonner Mill, May of 1948. Arne Karkanen is at the left with the pike pole.

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